KT has filed a patent for a method of decoding video involving weighted prediction parameters and reference pictures to generate a final prediction block. Claims 1-15 have been canceled. GlobalData’s report on KT gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on KT, Adaptive video coding was a key innovation area identified from patents. KT's grant share as of January 2024 was 30%. Grant share is based on the ratio of number of grants to total number of patents.
Video decoding method using weighted prediction parameters
The patent application (Publication Number: US20240015292A1) describes a method for decoding a video involving obtaining prediction blocks based on reference pictures, determining weights for these blocks, and generating a bi-prediction block through a weighted sum. The reconstruction block of the current block is then obtained based on this bi-prediction block. The weights are determined based on a plurality of weight candidates, with the number of candidates being influenced by the temporal directions of the reference pictures. Additionally, the method involves encoding information derived from a bitstream using truncated unary binarization.
Furthermore, the patent application also details a method for encoding a video, which includes obtaining prediction blocks based on reference pictures, determining weights for these blocks, generating a bi-prediction block through a weighted sum, and obtaining a residual block by subtracting the bi-prediction block from an original block. Similar to the decoding method, the weights are determined among a plurality of weight candidates, with the number of candidates being influenced by the temporal directions of the reference pictures. Information indicating the selected weight candidate is encoded using truncated unary binarization. Additionally, the application includes a transmitting apparatus for data transmission of image information, where the weights for prediction blocks are determined based on a plurality of weight candidates influenced by the temporal directions of the reference pictures.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
